P0DC2 code meaning
Hybrid/EV Battery Cell Balancing Circuit F Stuck Off
Powertrain system Generic code P0Dxx codes Check engine light
What P0DC2 means
With P0DC2 the controller concludes that circuit F does not bleed when asked to, so the fullest cells of group F are never trimmed. Ford's 2014 hybrid OBD summary applies the same 75 mV deviation test over the six cells of each circuit as for the stuck-on code, but the 2014 to 2018 versions want the deviation seen at two power-ups in a row, before the contactors close. The practical cost lies in charging: the group that cannot shed charge reaches its upper limit first and stops the charge for the whole pack. An Intersil (now Renesas) application note estimates that lithium cells 150 mV apart at full charge can lose up to a quarter of usable pack capacity. CARB's section 1968.2 counts the missing response as a malfunction. The always-on opposite is P0DC1.
P0DC2 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor1.5 to 8 hours
- Clears after repairAfter a drive cycle
Symptoms of P0DC2
- Charging ends earlier than usual, displayed full charge gives less range
- Cells of group F remain highest after charging
- Check engine light, usually without noticeable driving change
Common causes of P0DC2
- Most likelyBleed resistor of group F burnt open
- PossibleBleed transistor of circuit F no longer conducting
- Less likelyLoose cell tap or connector pin on the balancing lead
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery cell balancing circuit fBms
What each part of P0DC2 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C2 | The exact fault in that area. |
What to do next
- Note P0DC2 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0DC2
What does P0DC2 mean?
P0DC2 means "Hybrid/EV Battery Cell Balancing Circuit F Stuck Off". With P0DC2 the controller concludes that circuit F does not bleed when asked to, so the fullest cells of group F are never trimmed. It is a generic code, so it means the same on every make.
Is it safe to drive with P0DC2?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P0DC2 fail an emissions test?
Yes, it can. P0DC2 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0DC2 to fix?
Difficulty: workshop only. A typical repair takes 1.5 to 8 hours of work. This is a job for a workshop.
Will P0DC2 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.